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Electric power conversion systems September class, title,number 09/10

Below are recently published patent applications awaiting approval from the USPTO. Recent week's RSS XML file available below.
Listing for abstract view: USPTO application #, Title, Abstract excerpt,Patent Agent. Listing format for list view: USPTO National Class full category number, title of the patent application.
  
09/30/2010 > patent applications in patent subcategories. class, title,number

20100246214 - Switching power supply unit: A witching power supply unit, which suppresses switching loss in switching elements and surge voltage onto an output rectifier device and reduces the number of components, is provided. The switching power supply unit include: a switching circuit of full bridge type disposed on the input side; a rectifier circuit disposed... Agent: Oliff & Berridge, PLC

20100246215 - Isolated dc-dc converter: An isolated DC-DC converter includes a transformer, a main switch, an active clamp circuit and a control unit. The transformer has a primary winding. The main switch and the active clamp circuit are connected to the primary winding. The active clamp circuit has an auxiliary switch and a clamp capacitor... Agent: Greenblum & Bernstein, P.L.C

20100246216 - Switch mode power supply controllers: This invention relates to SMPS controllers employing primary side sensing. We describe a system for identifying a knee point in a sensing waveform, at which the output voltage of the SMPS may be sampled accurately on the primary side. The system identifies the knee point, broadly speaking, by tracking a... Agent: Schwegman, Lundberg & Woessner, P.A.

20100246217 - Direct ac power converting apparatus: A control section controls a current-source converter simultaneously with or prior to conduction of a power supply switch to connect a clamp capacitor and capacitors between a first input line on which a resistor is provided and any one of second and third input lines in parallel with each other.... Agent: Birch Stewart Kolasch & Birch

20100246218 - Power factor control circuit and mains power supply: The invention relates to a power factor control circuit (10) and to a universal mains power supply (100). The power factor control circuit comprises input nodes (n1, n2) which receive a rectified input voltage being a rectified mains input voltage, and a drive circuit (IC1) which drives a switch (M1).... Agent: Philips Intellectual Property & Standards

20100246219 - Applying charge pump to realize frequency jitter for switched mode power controller: Method and apparatus for adding jitter to an oscillator for reducing EMI are disclosed An oscillator circuit includes an oscillator configured to generate a first clock having a first frequency and a frequency jitter circuit including a charge pump configured to charge and discharge first and second capacitors repeatedly for... Agent: Townsend And Townsend And Crew, LLP

20100246221 - Dynamic phase manager for multi-phase switching regulators: An apparatus is provided. The apparatus comprises a current sensor, an error amplifier, a comparator, an analog-to-digital converter (ADC), control logic, and drivers. The error amplifier is adapted to receive a reference voltage and a feedback voltage, and the comparator has a first input terminal and a second input terminal,... Agent: Texas Instruments Incorporated

20100246220 - Method and apparatus for multi-stage power supplies: A power supply having an specified hold-up time to take a input voltage and convert it to an output voltage, comprising: a first power stage to receive the input voltage; a second power stage to generate the output voltage and an output current; an intermediate charge storage device coupled between... Agent: Venable LLP

20100246222 - Method and apparatus for digital control of a switching regulator: Various techniques directed to the digital control of a switching regulator are disclosed. In one aspect, a power supply regulator includes a compare circuit to be coupled to receive a feedback signal representative of an output level of a power supply. This causes a feedback state signal to be generated... Agent: Blakely Sokoloff Taylor & Zafman LLP

20100246223 - Transformerless photovoltaic grid-connecting inverting device and control method thereof: The present invention relates to a transformerless photovoltaic grid-connecting inverting device and an inverting control method thereof. The inverting device comprising a boosting unit, an inverting unit, a grid-connecting unit and a control unit. The boosting unit is connected to a solar cell, for boosting an output voltage of the... Agent: Hamre, Schumann, Mueller & Larson, P.C.

20100246224 - Power supply for negative voltage load: A power supply for a negative voltage load has a switch-mode power unit, a monitoring unit, a first auxiliary power unit and a second auxiliary power unit. The switch-mode power unit has a rectifying circuit, a power factor correction circuit, a DC to DC power circuit. The first auxiliary power... Agent: Cooper & Dunham, LLP

20100246225 - Power supply for server: The present invention provides a power supply for a server including: a PFC (Power Factor Correction) unit for meeting harmonic regulation by being connected to an input power source; a DC/DC unit including a switching stage provided with at least one switching device to switch a voltage of a link... Agent: Lowe Hauptman Ham & Berner, LLP

20100246227 - Switching power supply: A switching power supply has a full-wave AC rectifier circuit; a chopper circuit including an inductor, a capacitor smoothing current from the inductor, and a switching device for on-off control of the current fed to the capacitor. The rectifier circuit further has an input voltage detector circuit detecting chopper circuit... Agent: Kanesaka Berner And Partners LLP

20100246226 - Transition mode power factor correction device with built-in automatic total harmonic distortion reduction feature: The present invention relates to controller for reducing the harmonics contents in the AC-to-DC converter. The controller, capable of minimizing THD due to crossover distortion, comprises: a THD Reducer for setting an appropriate offset voltage to for THD reduction; an Error Amplifier for generating an output voltage error signal corresponding... Agent: Morris Manning Martin LLP

20100246228 - poly-phase ac/dc active power converter: A three-phase AC/DC active power converter provides an H-bridge that is controlled by a DSP (digital signal processing) controller that places the H-bridge in a voltage-boost mode of operation when voltage of a DC-link capacitor maintained by the H-bridge is near than the voltage input from a three-phase power source.... Agent: Renner Kenner Greive Bobak Taylor & Weber

20100246229 - Power supply module: A power supply module is configured for converting an AC voltage to a first DC voltage and applying the first DC voltage to a load. The power supply module includes a rectifying and filtering unit, a PFC unit, a voltage transforming unit, an input port, and a switch unit. The... Agent: Altis Law Group, Inc. Attn: Steven Reiss

20100246230 - High reliability power systems and solar power converters: Reliability enhanced systems are shown where an short-lived electrolytic capacitor can be replaced by a much smaller, perhaps film type, longer-lived capacitor to be implemented in circuits for power factor correction, solar power conversion, or otherwise to achieve DC voltage smoothing with circuitry that has solar photovoltaic source (1) a... Agent: Santangelo Law Offices, P.C.

20100246231 - Achieving zvs in a two quadrant converter using a simplified auxiliary circuit: A zero voltage switch half bridge converter comprises a first and second diode series diodes, parallel with a voltage source. A first terminal of an inductor is joined to the diode junction. A first semiconductor auxiliary switch connected in series between the voltage source and a third diode, which is... Agent: Darby & Darby P.C.

20100246232 - In-wall multi-voltage ac/dc delivery system: A system of components pertaining to electrical wiring and adaptive, multipurpose outlets. A standardized and interchangeable in-wall system includes low voltage, direct-current power from an alternating current power source, compatible with existing AC outlet boxes. In a preferred embodiment, a standardized configuration of in-wall USB ports supplies low voltage, direct... Agent: Ever Win International Corporation

20100246233 - Dc injection of energy from renewable power sources: In general, in one aspect, the disclosure describes an apparatus to enable direct injection of DC power from a renewable power source (e.g., solar) into an electronic device (e.g., computer). The DC power from the renewable source is injected into the electronic device on the DC side of a power... Agent: Ryder, Lu, Mazzeo And Konieczny, LLC C/o Cpa Global

  
09/23/2010 > patent applications in patent subcategories. class, title,number

20100238688 - Power supply apparatus: The DC power supply apparatus includes a switching operation control part that is provided between a current detection part to detect a current flowing through a primary coil of a transformer and a control part to control the operation of a switching part and controls the operation of the switching... Agent: Fitzpatrick Cella Harper & Scinto

20100238689 - Method and apparatus for controlling a constant current output in a switching mode power supply: A controller for providing a constant output current control signal in a switched mode power supply (SMPS) includes a conduction time compensation circuit that is configured to produce a compensated conduction time interval signal that includes compensation for a ringing waveform of a feedback signal. The compensated signal reflects more... Agent: Townsend And Townsend And Crew, LLP

20100238690 - Methods for minimizing double-frquency ripple power in single-phase power conditioners: A method is provided for minimizing a double-frequency ripple power exchanged between a load and an energy source, the energy source delivering electrical power to the load through a single-phase power conditioner, and the power conditioner being coupled to an energy storage device. The method senses a first AC signal... Agent: Barnes & Thornburg LLP

20100238691 - Ac-to-dc power supply circuit: An AC-to-DC power supply circuit has an AC capacitor, a half-wave rectifier, and a filter capacitor. Through the AC capacitor, the half-wave rectifier forms a power supply circuit with an AC power supply for converting AC power to half-wave DC power. The filer circuit further converts the half-wave DC power... Agent: Hershkovitz & Associates, LLC

20100238692 - Rectifier with sic bipolar junction transistor rectifying elements: A rectifier circuit can include an input circuit and first and second silicon carbide (SiC) bipolar junction transistors (BJTs). The input circuit is configured to respond to an alternating current (AC) input signal by generating a first pair of opposite polarity AC signals and a second pair of opposite polarity... Agent: Myers Bigel Sibley & Sajovec, P.A.

  
09/16/2010 > patent applications in patent subcategories. class, title,number

20100232180 - Power supply unit, hard disk drive and method of switching the power supply unit: Zero volt switching during a light load is performed in such a manner that through an ON/OFF control of switches provided for a full bridge circuit and the synchronous rectifier switches in a rectifier and smoothing circuit, a resonant peak voltage necessary for the zero voltage switching determined by the... Agent: Foley And Lardner LLP Suite 500

20100232181 - Transformer and switching power supply unit: The transformer includes: a magnetic core having two base-plates and four legs; a first conductive member as a first winding, having four through-holes through which the four legs pass, respectively; and one or more second conductive members as a second winding, each having four through-holes through which the four legs... Agent: Oliff & Berridge, PLC

20100232182 - Dual-switches flyback power converter with self-excited supply to power the high-side driver: An exemplary embodiment of a flyback power converter includes a transformer for power transfer, a high-side transistor, a low-side transistor, two diodes, a control circuit, and a high-side drive circuit. The high-side transistor and the low-side transistor are coupled to switch the transformer. The two diodes are coupled to said... Agent: Thomas, Kayden, Horstemeyer & Risley, LLP

20100232183 - Control circuit of resonant power converter with asymmetrical phase shift to improve the operation: A control circuit of the resonant power converter according to the present invention comprises a frequency modulation circuit modulating a switching frequency of a switching signal in response to a feedback signal in a first operation range. A phase-shift circuit performs a phase-shift modulation to the switching signal in response... Agent: Rosenberg, Klein & Lee

20100232184 - Dc converter: A DC converter includes: a transformer (T1) including a primary winding (P1) and a secondary winding (S1); a series resonant circuit in which a current resonant reactor (Lr), the primary winding (P1) of the transformer, and a current resonant capacitor (Cri) are connected in series; conversion circuits (Q1, Q2) for... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, L.L.P.

20100232185 - Power supply module: A power supply module includes an AC/DC converter, a voltage transforming circuit, a feedback circuit, and a detecting circuit. The AC/DC converter is used for converting the input AC voltage to a primary DC voltage. The voltage transforming circuit is used for transforming the primary DC voltage to the first... Agent: Altis Law Group, Inc. Attn: Steven Reiss

20100232186 - Switching power supply device: A switching power supply device includes a transformer, a switching unit which is connected with a primary winding of the transformer and configured to switch a current flowing to the primary winding, a start unit configured to start the switching unit, a voltage drop unit configured to lower output voltage... Agent: Canon U.s.a. Inc. Intellectual Property Division

20100232187 - Output voltage control circuit of power converter for light-load power saving: A control circuit of a power converter for light-load power saving according to the present invention comprises a first feedback circuit coupled to an output voltage of the power converter to receive a first feedback signal. A second feedback circuit is coupled to the output voltage to receive a second... Agent: Rosenberg, Klein & Lee

20100232188 - Power supply apparatus: In a power supply apparatus, a current limitation unit configured to detect a current flowing through a primary winding of a transformer to limit a current to a switching unit has a self-holding unit configured to self-hold a state where the current to the switching unit is limited.... Agent: Canon U.s.a. Inc. Intellectual Property Division

20100232189 - Method for portioning output current of a dc-dc converter: At least some aspects of the invention are directed to methods and apparatus for controlling an uninterruptible power supply and subsystems of a UPS. A first aspect of the invention is directed to a method of controlling a DC-DC converter having a predetermined maximum peak load current value. The DC-DC... Agent: Lando & Anastasi, LLP A2000

20100232190 - Conversion of ac lines to hvdc lines: An electric power transmission system includes at each end of a high voltage direct current transmission line including three conductors, a converter station for conversion of an alternating voltage into a direct voltage for transmitting direct current between the stations in all three conductors. Each station has a voltage source... Agent: Venable LLP

20100232191 - Power conditioner and solar photovoltaic power generation system: A first circuit generates a first sequence of square wave voltages having a voltage level that changes to a positive side relative to a first reference potential, which is a potential on a negative-electrode side of a direct current power source, from a direct current voltage. A second circuit generates... Agent: Foley And Lardner LLP Suite 500

20100232192 - Power conversion apparatus, power conditioner, and power generation system: A first chopper circuit generates a first sequence of square wave voltages having a voltage level that changes to a positive side by chopping a direct current voltage at a system frequency. A second chopper circuit generates a second sequence of square wave voltages having a voltage level that changes... Agent: Foley And Lardner LLP Suite 500

20100232193 - Capacitive power supply: A capacitive power supply comprises an input section (10) having input terminals (Ln, Nt) for connection to an mains supply,and a capacitive coupling, a rectification section (20) coupled via the capacitive coupling to the input terminals (Ln, Nt), and an output section (30) coupled to the rectification section, the output... Agent: Philips Intellectual Property & Standards

  
09/09/2010 > patent applications in patent subcategories. class, title,number

20100226148 - Wide supply range flyback converter: A wide supply range flyback converter consists of a Schmitt trigger driving a switching device such as MOSFET. The circuit employs a feed forward voltage controlled current source and two other voltage controlled current sources, one of which is responsible for minimizing on time and the other for increasing off... Agent: Ivan Meszlenyi

20100226149 - Power-supply control device and power-supply apparatus therewith: An embodiment of the invention provides a converter power-supply apparatus that is efficiently operable for a wide-range load. A power-supply control device controls a boost converter. The boost converter includes a basic switching circuit, an expansion switching circuit that is connected in parallel with the basic switching circuit. A control... Agent: Turocy & Watson, LLP

20100226150 - Method and device for regulating a resonant inverter equipped with such a device: Embodiments of the present invention relate to a method and device for regulating a series resonant inverter with controlled rectification. It also relates to a resonant inverter equipped with such a device. The synchronous series resonant inverter includes a primary winding having across its terminals a periodic voltage V(t) of... Agent: Darby & Darby P.C.

20100226151 - Power conversion circuit and portable power supply having such power conversion circuit: A power conversion circuit includes a flyback DC-to-DC converter, a capacitor and a DC-to-AC converter. The flyback DC-to-DC converter is used for receiving an input DC voltage and converting the input DC voltage into a constant high DC voltage. The capacitor is connected to the flyback DC-to-DC converter for filtering... Agent: Austin Rapp & Hardman

20100226152 - Inverter: The inverter includes an electrolytic capacitor which receives DC power, a series resonant circuit connected in parallel with the electrolytic capacitor, and a switching device group which converts the DC power into AC power by switching using pulse width modulation.... Agent: Birch Stewart Kolasch & Birch

20100226153 - Method and arrangement in connection with half-controlled network bridge: A method and an arrangement for controlling phase-specific thyristors of a half-controlled network bridge. The method comprises the steps of identifying continuously a thyristor to be controlled on the basis of magnitudes of supplying phase voltages; controlling the thyristor by enabling a current flow to its gate current circuit through... Agent: Buchanan, Ingersoll & Rooney PC

20100226154 - Power converters: A power converter capable of improving converter's efficiency and achieving zero-voltage-switching is provided, in which a first series circuit is connected in parallel with a direct current (DC) power supply and has a first inductor, a first primary winding, first and second switching elements connected in series. A second series... Agent: Quintero Law Office, PC

20100226155 - Power supply with integrated concentric high voltage multiplier: A high voltage power supply for use in small diameter spaces such as in oil well logging devices includes an AC voltage source and a voltage multiplier circuit. An inside set of parallel capacitors is constructed with an inside common capacitor electrode, an inside dielectric material around the outside of... Agent: Thorpe North & Western, LLP.

20100226156 - Power supply with integrated linear high voltage multiplier and capacitors therefor: A high voltage power supply for use in small diameter spaces such as in oil well logging devices includes an AC voltage source which provides an AC voltage to a voltage multiplier circuit that converts the AC voltage to a high DC voltage. A parallel or combination parallel-series multiplication circuit... Agent: Thorpe North & Western, LLP.

20100226157 - Power conversion control device, power conversion control method, and power conversion control program: In the present invention, when configuring a control system of an inverter performing power conversion between AC and DC, a frequency computation is performed based on biaxial voltage amounts obtained through two current regulators in such a way that each of biaxial component currents obtained by detecting an AC circuit... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, L.L.P.

20100226158 - Electric power converter apparatus enabling reduction of temperature differences among a plurality of semiconductor modules of the apparatus: An electric power converter apparatus includes a plurality of semiconductor modules connected in parallel, with respective current-carrying electrode terminals of the modules being connected to a common branch point via connecting leads having respectively different values of impedance, such that the impedance values decrease in accordance with increased degrees of... Agent: Nixon & Vanderhye, PC

20100226160 - Power generation system and inverter for feeding power into a three-phase grid: A power generation system for feeding electrical power from a generation unit into a three-phase grid via three AC terminals is disclosed. The system includes a relay arrangement for disconnecting the system from the grid having at least three relays. Each of the three relays includes a control coil and... Agent: Crowell & Moring LLP Intellectual Property Group

20100226159 - Very high efficiency three phase power converter: A DC-to-AC power converter is disclosed which provides current regulated three-phase AC outputs and very high conversion efficiencies. The converter sinks power from an external DC current source and steers that current directly into two phases of a three-phase load by using complementary semiconductor switches in disparate half-bridges of a... Agent: Michael J Stern

  
09/02/2010 > patent applications in patent subcategories. class, title,number

20100220499 - Hybrid distribution transformer with an integrated voltage source converter: A hybrid distribution transformer is provided that includes an electromagnetic transformer and a voltage source converter that is operable to reduce fluctuation in the output voltage of the hybrid distribution transformer in the event of an increase or decrease in the input voltage.... Agent: Abb Inc. Legal Department-4u6

20100220501 - Dc/dc converter and ac/dc converter: A DC/DC converter (1) having a plurality n of two-pole inverters (2a, 2b) connected in parallel or in series, n transformers (Ta, Tb) and n two-pole rectifiers (3a, 3b) connected in parallel or in series is described. One inverter (2a, 2b) each and one rectifier (3a, 3b) each are connected... Agent: George Kapsalas Patentburo Paul Rosenich Ag

20100220500 - Power converter and method for controlling power converter: The invention prevents the voltage change ratio of switching devices of a power converter from exceeding a specified maximum rating, thus avoiding damage in switching devices and an increase in conduction loss. In a power converter having a plurality of switching devices, switching means for switching a control scheme for... Agent: Rossi, Kimms & Mcdowell LLP.

20100220502 - Isolating self-oscillation flyback converter: An isolating self-oscillation flyback converter includes a coupling transformer T1, a FET TR1, a transistor TR2, a photoelectric coupling isolator OC1 and a load feedback circuit Adj. The common polarity terminal of a feedback winding Nfb of the coupling transformer T1 is connected to the gate of the FET TR1... Agent: Wilkinson & Grist

20100220503 - Method and apparatus for controlling the maximum output power of a power converter: A controller for a power converter is disclosed. An example circuit controller according to aspects of the present invention includes an input voltage sensor to be coupled to receive an input signal representative of an input voltage of the power converter. A current sensor is also included and is to... Agent: Blakely Sokoloff Taylor & Zafman LLP

20100220504 - Power supply apparatus having multiple outputs: A power supply apparatus having multiple outputs is described. The power supply apparatus having multiple outputs which comprises a transformer, a first output circuit generating a first output voltage with respect to a power transferred to a secondary side of the transformer, and a first output controller generating a first... Agent: Staas & Halsey LLP

20100220505 - Dc/dc converter: A DC/DC converter has three half-bridge-type current resonant DC/DC converters that are connected in parallel, have a phase difference of 120 degrees, and are operated at a frequency higher than a resonant frequency. Each of the three half-bridge-type current resonant DC/DC converters includes a transformer having a primary winding, a... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, L.L.P.

20100220506 - Control circuit for switching power supply: A control circuit for a switching power supply (SPS) includes power input and output interfaces, a relay, a relay driving circuit, a microprocessor, and an alternating current/directing current (AC/DC) converter. The power input interface receives an external alternating current (AC) power signal, and transmits the AC power signal to the... Agent: PCe Industry, Inc. Att. Steven Reiss

20100220507 - Microcontroller operated current limited switching power supply for circuit protective devices: An AC to DC power supply for small heat sensitive electronic device. The power supply being dynamically controlled to operate symmetrically about the lowest point of the AC source voltage waveform for minimum excess heat production.... Agent: Schneider Electric / Square D Company Legal Dept. - I.p. Group

20100220508 - Photovoltaic inverter with option for switching between a power supply system with a fixed frequency and a load variable frequency: A photovoltaic inverter having an inverter bridge section, a first output, a second output, and a power switch. The inverter bridge section is operable for converting DC electrical energy into AC electrical energy. The inverter bridge section has an output for outputting the AC electrical energy. The power switch is... Agent: Brooks Kushman P.C.

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